A Little More Than Love (1977)

Two couples of young newlyweds are having some problems in the marital erotic area. One of the wives is also a firebrand in the women's lib movement and now goes with renewed enthusiasm to fight against "possible male pigs". Coincidences arrange it so that they are asked by married couples to exchange partners. Thus the whole situation is resolved and the whole loving quartet gradually regain their considerable skills, with extremely successful results.